Transfer your domain to a different domain registrar

If your domain is managed by a provider that doesn't support all the necessary DNS records, you can transfer it to a different registrar. When you transfer the domain, you change who you send payments to in order to renew and keep your domain name.

Request the transfer at the registrar that you want to move your domain to. Look on their website for an option such as Transfer DNS. Be aware that after they make the changes, it can take a few days update across the Internet.

How to buy a domain for Office 365 operated by 21Vianet

If you don't already have your own domain, you can easily buy one online at a domain name registrar, domain reseller, or even at your current Internet provider. You get a domain name when you sign up for Office 365 operated by 21Vianet, for example, contoso.partner.onmschina.cn. But you may want to use a custom domain name, like fourthcoffee.com.

To set up a domain in Office 365, you must own a domain and change some of the DNS records for your domain.